//
//  CZNetworkTool.m
//  单例01
//
//  Created by apple on 16/2/27.
//  Copyright © 2016年 apple. All rights reserved.
//

#import "CZNetworkTool.h"

@implementation CZNetworkTool

+ (instancetype) sharedInstance{
    
    static CZNetworkTool *instance;
    static dispatch_once_t onceToken;
    dispatch_once(&onceToken, ^{
        instance = [[CZNetworkTool alloc] init];
    });
    return instance;
}

@end
